None of the sealants sold by this store work and are not refundable, regardless of what the employees tell you on the phone. I bought a tubeless conversion kit that would not seal and was told I could return it for a refund on the phone, only to find out when I tried to return the product in the store the employee lied directly to my face saying he never said I would receive a full refund. The customer service is atrocious. You can't take anything these individuals say at face value.